US20100078497A1 - Method of Dispensing a Volatile Material - Google Patents
Method of Dispensing a Volatile Material Download PDFInfo
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- US20100078497A1 US20100078497A1 US12/565,530 US56553009A US2010078497A1 US 20100078497 A1 US20100078497 A1 US 20100078497A1 US 56553009 A US56553009 A US 56553009A US 2010078497 A1 US2010078497 A1 US 2010078497A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
Definitions
- the present invention relates to methods of dispensing volatile materials, and more particularly, to methods of dispensing volatile material according to pre-established programming that aids in diminishing or preventing habituation.
- some diffusers include a heating element for heating a volatile material to promote vaporization thereof.
- Other diffusers employ a fan or blower to generate air flow to direct volatile material out of the diffuser into the surrounding environment.
- one or more volatile materials may be emitted from the diffuser using a bolus generator that delivers a pulse of air to eject a scent ring.
- Still other diffusers that dispense volatile materials utilize ultrasonic means to dispense the volatile materials therefrom.
- other diffusers utilize more than one of these means to vaporize and/or disperse volatile materials.
- a problem with past volatile material diffusers is that a user may become accustomed to or habituated to a particular volatile material. Habituation is a phenomenon that occurs when a person becomes use to a particular volatile material or fragrance such that they no longer perceive the volatile material.
- Various diffusers have attempted to alleviate this problem.
- Some diffusers include a switch or other mechanism that is controlled by the user, whereby the user can change the intensity level at which the volatile material is dispensed.
- the manner in which the intensity level of the volatile material is varied is either mechanical or electrical in nature.
- Other diffusers include one or more containers having a volatile material therein, wherein a fan and/or a heater is periodically actuated to dispense the volatile material at particular time intervals.
- Still other diffusers include at least two fragrances that are emitted in an alternating sequence.
- One such diffuser includes a housing having first and second heaters, wherein the housing is adapted to releasably secure first and second containers having first and second wicks respectively extending therefrom. The wicks are disposed adjacent the heaters and the heaters are turned on and off in an alternating sequence to alternately emit the first and second fragrances.
- a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element.
- the method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the period of time at a first duty cycle having a first on time and a first off time.
- the method includes the step of operating the diffusion element for a final period of time, wherein the diffusion element is continuously activated and deactivated during the final period of time at a final duty cycle having a final on time and a final off time.
- the first duty cycle is less than about 100% such that the first off time is greater than about 0 seconds and the final duty cycle is about 100% such that the final off time is about 0 seconds and wherein the final period of time begins after the first period of time has finished.
- a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element.
- the method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the first period of time at a first duty cycle.
- the method includes the steps of interrupting operation of the diffusion element during the first period of time to operate the diffusion element at a second duty cycle for an interrupt period of time. The first and second duty cycles are different.
- a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element.
- the method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the first period of time at a first duty cycle.
- the method includes the step of operating the diffusion element for a second period of time following the first period of time, wherein the diffusion element is continuously activated and deactivated during the second period of time at a second duty.
- the method still further includes the step of interrupting operation of the diffusion element during at least one of the first and second periods of time to operate the diffusion element at a third duty cycle for an interrupt period of time.
- FIG. 1 is a perspective view of a volatile material diffuser according to the present invention
- FIG. 2 is an exploded view of the volatile material diffuser of FIG. 1 ;
- FIG. 3 is a front elevational view of the volatile material diffuser of FIG. 1 ;
- FIG. 4 is a block diagram of circuits including a programmable device for controlling application of power to a heating device of the diffuser of FIGS. 1-3 ;
- FIG. 4A is a schematic of one embodiment of the circuits of FIG. 4 ;
- FIGS. 5A and 5B depict a flow chart illustrating a first embodiment of programming that may be implemented by a programmable device for operation of the heating device of the diffuser of FIGS. 1-3 ;
- FIG. 6 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted in FIG. 5 ;
- FIG. 7 depicts a flow chart illustrating a second embodiment of programming that may be implemented by a programmable device for operation of the heating device of the diffuser of FIGS. 1-3 ;
- FIG. 8 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted in FIG. 7 ;
- FIG. 9 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted in FIG. 7 with an interrupt.
- a volatile material diffuser 30 generally includes a multi-piece housing 32 having an upper housing portion 34 and a lower housing portion 36 fastened together by heat-staking or other suitable fastening means, including, for example, rivets, press fit, snap fit, screws, ultrasonic welding, adhesives, and the like.
- a container 38 is detachably retained within the lower housing portion 36 .
- the diffuser 30 further includes an electrical plug assembly 40 having a plug portion 42 rotatably secured between the upper and lower housing portions 34 , 36 and electrical contacts 44 extending outwardly from the plug portion 42 for insertion into a conventional wall outlet (not shown) or other electronic device, as discussed in greater detail hereinafter.
- a collar 46 is disposed over the plug portion 42 to ensure proper engagement of the upper and lower housing portions 34 , 36 around the plug portion 42 .
- the container 38 includes a volatile material disposed therein and a wick 48 in contact with the volatile material and extending out of the container 38 .
- the wick 48 is adapted to draw the volatile material in the form of a liquid out of the container 38 toward an upper portion 49 of the wick 48 .
- the container 38 is adapted for insertion into and securement within the housing 32 .
- front and rear surfaces 50 a, 50 b of the container 38 include shell-shaped protrusions 52 (only the shell-shaped protrusion on the front surface 50 a is shown) extending therefrom.
- the container 38 is inserted into the lower housing portion 36 by inserting the wick 48 into the housing 32 and thereafter moving the container 38 upwardly.
- the shell-shaped protrusion 52 on the front surface 50 a of the container 38 causes a slight outward deformation of a front wall 54 of the upper housing portion 34 to allow the protrusion 52 to pass into a similarly-shaped aperture 56 in the front wall 54 of the upper housing portion 34 .
- the shell-shaped protrusion (not shown) on the rear surface 50 b of the container 38 moves along a groove 60 formed in a front surface 62 of the lower housing portion 36 , as seen in FIGS. 2 and 3 .
- a top portion of the shell-shaped protrusion (not shown) on the rear surface 50 b of the container 38 comes to rest at a top portion of the groove 60 that has a shape similar to a top portion of the shell-shaped protrusion. Pulling the container 38 in a downward direction causes a slight outward deformation of the front wall 54 of the upper housing portion 34 to allow a user to remove and replace the container 38 .
- a neck portion of the container 38 may alternatively be designed to snap or screw into the housing 32 .
- the volatile material within the container 38 may be any type of volatile material, for example, an insecticide, an insect repellant, an insect attractant, a disinfectant, a mold or mildew inhibitor, a fragrance, a disinfectant, an air purifier, an aromatherapy scent, an antiseptic, an odor eliminator, a positive fragrancing volatile material, an air-freshener, a deodorizer, or the like, and combinations thereof.
- volatile material for example, an insecticide, an insect repellant, an insect attractant, a disinfectant, a mold or mildew inhibitor, a fragrance, a disinfectant, an air purifier, an aromatherapy scent, an antiseptic, an odor eliminator, a positive fragrancing volatile material, an air-freshener, a deodorizer, or the like, and combinations thereof.
- the electrical contacts 44 are electrically connected via conventional electrical conductors 70 , such as wires or electrodes, to a heating device 72 .
- the lower housing portion 36 includes a horizontal platform 74 extending generally perpendicularly from the front surface 62 of the lower housing portion 36 .
- a heating device support 76 extends upwardly from the platform 74 for holding the heating device 72 .
- the wick 48 thereof extends through a channel 80 in the platform 74 such that the top portion 49 of the wick 48 is disposed adjacent the heating device 72 .
- the heating device 72 applies heat to the wick 48 to enhance the rate at which the volatile material therein is evaporated. As volatile material is evaporated from the wick 48 , the volatile material moves upwardly and out an aperture 82 disposed in the upper housing portion 34 .
- the diffuser 30 further includes an adjustment mechanism 88 that positions an upper portion of the wick 48 in one of a number of discrete positions relative to the heating device 72 to change the intensity at which the volatile material is evaporated.
- the adjustment mechanism 88 includes a hollow cylindrical portion 90 that surrounds and engages the upper portion of the wick 48 to move same toward and away from the heating device 72 .
- the adjustment mechanism 88 is similar to the adjustment mechanism described in Pedrotti et al. U.S. Pat. No. 6,931,202, the disclosure of which is hereby incorporated by reference in its entirety.
- a dial portion 92 is provided for rotating the cylindrical portion 90 to change the intensity at which the volatile material is evaporated.
- the dial portion 92 extends through an opening 94 in the front wall 54 of the upper housing portion 34 such that a user can rotate the dial portion 92 .
- An indicator 96 is preferably disposed on the front wall 54 of the upper housing portion 34 to provide an indication to a user of how to rotate the dial portion 92 to increase and decrease an intensity at which the volatile material is evaporated.
- the diffuser 30 described with respect to FIGS. 1-3 is described in greater detail in Zobele U.S. Pat. No. 6,996,335, the disclosure of which is incorporated herein in its entirety.
- the diffuser 30 includes an adapter box 100 having a conventional electrical socket 102 therein ( FIG. 2 ), wherein the electrical contacts 44 extending from the plug portion 42 of the diffuser 30 are inserted into and retained within the electrical socket 102 .
- the adapter box 100 includes a set of electrical contacts 104 extending therefrom for insertion into a conventional wall socket (not shown) to power the diffuser 30 .
- the adapter box 100 includes a printed circuit board (PCB) 106 ( FIG. 2 ) disposed therein for controlling the functionality of the heating device 72 , as discussed in greater detail hereinafter.
- the adapter box 100 may be used with any diffuser known in the art.
- the adapter box 100 may be replaced by a PCB 106 that implements the same or similar functionality and which is disposed within the diffuser 30 .
- FIG. 4 depicts a block diagram of circuits for controlling the operation of the heating device 72 of the volatile material diffuser 30 .
- the circuits of FIG. 4 are carried by, for example, the PCB 106 .
- a voltage regulator 200 known to those of ordinary skill in the art provides a regulated voltage Vcc to a programmable device 202 .
- the programmable device 202 is an 8-pin flash based 8-bit CMOS microcontroller PIC12F629 sold by Microchip Technology Inc. of Chandler, Ariz.
- the programmable device 202 includes a timer 204 and/or a random number generator 206 .
- An optional drive circuit 208 is connected between the programmable device 202 and the heating device 72 .
- the optional drive circuit 208 may be carried by the PCB 106 and is utilized if the programmable device 202 cannot develop suitable power to operate the heating device 72 .
- FIG. 4A illustrates one embodiment of the circuits of FIG. 4 , wherein the voltage regulator 200 is shown in a block A.
- the block A includes four diodes D 1 -D 4 coupled in a full bridge configuration to develop a full wave rectified voltage from a 120 VAC power supply.
- a resistor R 1 and a zener diode D 5 are connected in parallel across the full wave rectified voltage and first and second capacitors C 1 and C 2 are connected in parallel between a terminal 199 and ground for filtering purposes.
- the components R 1 , D 5 , C 1 , and C 2 together develop a 5V voltage for the programmable device 202 .
- circuitry comprising a resistor R 2 and a zener diode D 6 to provide a timing reference to the programmable device 202 .
- An output of the programmable device provides a control signal via a resistor R 3 to a base of a transistor Q 1 .
- the collector of the transistor Q 1 is connected to a first terminal 210 of the heating device 72 and an emitter of the transistor Q 1 is connected to ground.
- a second terminal 212 of the heating device 72 is connected to the full wave rectified voltage.
- the programmable device 202 controls how much of each pulse of the full wave rectified voltage that is applied to the heating device 72 by turning the transistor Q 1 on and off for a predetermined amount of time during each pulse of the full wave rectified voltage. While this is not a conventional implementation of pulse width modulation (PWM), the conduction time of the heating device 72 is varied as if a PWM signal were applied thereto.
- PWM pulse width modulation
- the programmable device 202 senses the zero crossing of the A.C. power supply once every 8 milliseconds.
- the programmable device 202 is programmed to save parameters, such as how much time has elapsed since the timer 204 was activated, when the programmable device 202 determines that the diffuser 30 has been disconnected form the A.C. power supply.
- the programmable device 202 saves current parameters because the programmable device 202 does not sense the zero-crossing for a period of more than 8 milliseconds while the capacitors C 1 and C 2 discharge.
- the programmable device 202 subsequently restores the saved parameters when power is reapplied to the diffuser 30 and the programmable device 202 senses the zero crossing.
- FIG. 5A illustrates a first embodiment of programming that may be implemented by the programmable device 202 to operate the heating device 72 , for example, or any other diffusion element known in the art.
- the timer 204 but no random number generator 206 is utilized. Operation begins at a block 220 after the adapter box 100 or diffuser 30 is plugged into an electrical outlet, wherein the block 220 initializes and starts the timer 204 .
- control passes to a block 224 that determines whether a period of 24 hours has elapsed since the block 220 activated the timer 204 . If not, control returns to block 222 . If a period of 24 hours has elapsed, control passes to a block 226 that operates the heating device at a 20% duty cycle. The block 226 passes control to a block 228 that determines whether a period of 48 hours has passed since the block 220 started the timer 204 . Control returns to the block 226 if the period since the timer 204 started is less than 48 hours.
- a block 232 determines whether a period of 144 hours has elapsed since the block 220 initialized the timer 204 . In the event that a period of less than 144 hours has elapsed since the timer 204 was initiated, control returns to the block 230 . Otherwise, if a period of 144 hours or more has elapsed, control passes to a block 234 that operates the heating device at a 40% duty cycle. The block 234 passes control to a block 236 that determines whether a period of 192 hours has elapsed since the timer 204 started. If not, control returns to the block 234 .
- the block 238 thereafter passes control to a block 240 that determines whether a period of 240 hours has elapsed since the timer 204 was initiated at the block 220 . If a period of less than 240 hours has elapsed since the timer 204 was started, control returns to the block 238 . Otherwise, if a period of 240 hours or more has elapsed, control passes to a block 242 that operates the heating device 72 at a 60% duty cycle. Following the block 242 , a block 244 determines whether it has been at least 288 hours since the block 220 activated the timer 204 . If not, control returns to the block 242 . If a period of at least 288 hours has elapsed since the timer 204 started, control passes to a block 246 that operates the heating device 72 at a 70% duty cycle.
- control passes from the block 246 to a block 248 that determines whether a period of 336 hours has elapsed since the block 220 activated the timer 204 . If not, control returns to the block 246 . Otherwise, if a period of at least 336 hours has elapsed, control passes to a block 250 that activates the heating device 72 at a 80% duty cycle. Following the block 250 , control passes to a block 252 that determines whether 384 hours has passed since the block 220 started the timer 204 . If less than 384 hours has elapsed since the timer 204 started, control returns to the block 250 .
- a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming of FIG. 5 to control the heating device 72 .
- a solid line C represents a delivery rate of the heating device 72 when the heating device 72 is operated at a duty cycle of 100% over a testing period of 96 hours. The delivery rate shown by the solid line C steadily decreases over time and would continue to do so if operated past 96 hours.
- broken line D illustrates the delivery rate of the heating device 72 when the duty cycle of the heating device 72 is varied over time according to the programming of FIG. 5 .
- the delivery rate shown by the broken line D indicates a spike in the delivery rate when the duty cycle of the heating device is increased from 10% to 20% after 48 hours of operation according to the programming of FIG. 5 . It is believed that similar spikes would occur after each increase in duty cycle, thereby providing bursts of volatile material that work to reduce, minimize, or prevent habituation to the volatile material.
- FIG. 7 illustrates a second embodiment of programming that may be implemented by the programmable device 302 to operate the heating device 72 , for example, or any other diffusion element known in the art.
- the timer 204 but no random number generator 206 is utilized. Operation begins at a block 320 after the adapter box 100 or diffuser 30 is plugged into an electrical outlet, wherein the block 320 initializes and starts the timer 204 .
- control passes to a block 324 that determines whether a period of 5 hours has elapsed since the block 320 activated the timer 204 . If not, control returns to the block 322 .
- control passes to a block 326 that operates the heating device 72 at a 33% duty cycle and passes control to a block 328 .
- the block 328 determines whether a period of 10 hours has elapsed since the block 320 activated the timer 204 . If not, control returns to the block 326 .
- control passes to a block 330 .
- the block 330 operates the heating device 72 at a duty cycle of 50% and passes control to a block 332 that checks whether a period of 24 hours has elapsed since the block 320 started the timer 204 .
- control returns to the block 330 . If a period of 24 hours has elapsed since the timer 204 was initiated, control passes to a block 334 that activates the heating device 72 at a 66% duty cycle. Following the block 334 , control passes to a block 336 that determines whether a period of 120 hours has elapsed since the block 320 initiated the timer 204 . If not, control returns to the block 334 . If a period of 120 hours has elapsed, control passes to a block 338 that operates the heating device at 80% duty cycle.
- the block 338 thereafter passes control to a block 340 that determines whether a period of 240 hours has elapsed since the timer 204 was initiated.
- the block 340 returns control to the block 338 if the block 340 determines that a period of less than 240 hours has elapsed. Otherwise, the block 340 passes control to a block 342 that operates the heating device 72 at 90% duty cycle and thereafter passes control to a block 344 .
- the block 344 determines whether a period of 360 hours has elapsed since the timer 204 was initiated in the block 320 . If not, control returns to the block 342 . If a period of 360 hours has elapsed, control passes to a block 346 that operates the heating device 72 at a 100% duty cycle.
- the block 346 passes control to a block 348 that determines whether a period of 1080 hours has elapsed since the timer 204 was started in the block 320 . Control returns to the block 346 if a period of less than 1080 hours has elapsed. Otherwise, operation ends at the block 348 .
- a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming of FIG. 7 to control the heating device 72 .
- a solid line E represents a delivery rate of the heating device 72 when the heating device 72 is operated at a duty cycle of 100%.
- the solid line E ends at 189 hours due to a limited testing period. As shown, the delivery rate shown by the solid line E steadily decreases over time and would continue to do so if the testing period were continued.
- broken line F illustrates the delivery rate of the heating device 72 when the duty cycle of the heating device 72 is varied over time according to the programming of FIG. 7 . Unlike the delivery rate shown by the solid line E, the delivery rate shown by the broken line F indicates a steady continuous delivery rate that does not decrease over time.
- the programming of FIG. 7 may be implemented by the programmable device 202 to operate the heating device 72 , for example, or any other diffusion element known in the art, with an interrupt.
- an interrupt may be generated to suspend control from any of the blocks shown in FIG. 7 and cause the random number generator 206 to generate a random number N1.
- the random number N1 may be any integer and may be selected from any set range of integers that would reduce, minimize, or prevent habituation.
- the programmable device 202 operates the programming of FIG. 7 until the interrupt gap period of time, which is equal to N1 ⁇ TIME FACTOR, has elapsed.
- the programmable device 202 operates the heating device 72 at an interrupt duty cycle for an interrupt period of time. After the interrupt period has elapsed, control may be returned to the last block that was in operation before the interrupt was generated. Thereafter, the interrupt may be generated again (for the same interrupt period or a different interrupt period) after the interrupt gap period of (N1 ⁇ TIME FACTOR), wherein NI may be a different integer every time the random number generator 206 is run.
- the random number Ni may be the same for a single loop through the programming.
- the random number N1 may be set at the block 320 and would remain the same for the entire programming and for multiple interrupts.
- the time factor is 1 hour
- the interrupt period is 1 hour
- the programming would implement an interrupt period of 1 hour after an interrupt gap of 8 hours, return to the programming after the 1 hour interrupt period for an interrupt gap of 8 hours, implement another 1 hour interrupt period, and continue this cycle throughout the programming.
- the random number N1 may be different for a single loop through the programming.
- the random number N1 may be set at the block 320 and would also be set after each interrupt completes.
- the programming would implement an interrupt period of 1 hour after an interrupt gap of 3 hours.
- the programming would then implement an interrupt period of 1 hour (or possibly a different interrupt period) after an interrupt gap of 9 hours. This cycle would continue throughout the programming.
- any interrupt period may be utilized that would reduce, minimize, or prevent habituation.
- the interrupt period is preferably between 5 minutes and 4 hours, more preferably between about 30 minutes and 2 hours, and most preferably 1 hour.
- multiple random numbers N1 are selected to create multiple interrupts, a single random number N1 may be selected to create a single interrupt.
- the time factor is preferably between about 10 seconds and about 8 hours, more preferably between about 1 minute and 60 minutes, and most preferably between about 5 minutes and about 30 minutes.
- the interrupt duty cycle is also preferably, although not necessarily 100%.
- the interrupt duty cycle may be any duty cycle that would create a spike or increase in volatile material emission.
- a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming of FIG. 7 with the interrupt, as described above, to control the heating device 72 .
- the random number N1 was randomly selected from the range of integers between and including 6 and 12 with a time factor of 1 hour and an interrupt period of 1 hour.
- a solid line G represents a delivery rate of the heating device 72 when the heating device 72 is operated at a duty cycle of 100% during the testing period of 193 hours. As shown, the delivery rate shown by the solid line G steadily decreases over time.
- broken line H illustrates the delivery rate of the heating device 72 when the duty cycle of the heating device 72 is varied over time according to the programming of FIG. 7 with the interrupt.
- the delivery rate shown by the broken line H indicates a spike in the delivery rate each time the heating device 72 is operated at a 100% duty cycle for a period of an hour according to the interrupt described above with respect to the programming of FIG. 7 . This spike in delivery serves to reduce, minimize, or prevent habituation that occurs when a volatile material is dispensed continuously at a single rate of emission.
- the interrupt may be implemented within any programming, for example, that of FIGS. 5A and 5B , programming wherein an active material is emitted at a single constant level, etc.
- duty cycles, time factors, interrupt gaps, and interrupt periods of time associated with each duty cycle may be varied, as long as such variations produce results similar to those seen in FIG. 6 and FIGS. 8 and 9 (without or with an interrupt), respectively.
- any such variations would still work to reduce, minimize, or prevent habituation in the same manners as seen in FIG. 6 and FIGS. 8 and 9 .
- the diffusion elements of the modes of operation herein are continuously activated and deactivated according to set duty cycles.
- the total periods for such duty cycles are preferably greater than 0 seconds and less than about 100 seconds, more preferably between about 1/10 second and about 20 seconds, and most preferably between about 1 second and about 10 seconds.
- time periods for activating diffusion elements at particular duty cycles are described herein, such time periods may be altered and/or the number of time periods decreased, so long as the mode of operation seeks to diminish or prevent habituation. Still further, although specific duty cycles are disclosed in the modes of operation herein, such duty cycles may be altered, so long as the mode of operation seeks to diminish or prevent habituation. In particular, additional modes of operation contemplated herein include stepwise increasing of the duty cycle over the same or increasing periods of time.
- Diffusion element(s) as referred to herein may be any type of element that promotes diffusion of a volatile material.
- diffusion elements include, but are not limited to, aerosol actuators, piezoelectric elements, heaters, fans, nebulizers, and the like. To that effect, any of the modes of operation disclosed herein may be utilized with any type of diffusion element and/or combinations of diffusion elements (e.g. a device that utilizes multiple heaters and a single fan, a device that utilizes a heater to diffuse a first volatile material and a fan to diffuse a second material, etc.).
- the modes of operation as disclosed herein refer to duty cycles, such modes of operation may be implemented to vary any characteristic of a diffusion element.
- a characteristic may be any feature of any diffusion element that may be altered to aid in diminishing or preventing habituation.
- Various characteristics include, but are not limited to speed, intensity, temperature, frequency of actuation, length of actuation, duty cycle, and the like.
- the speed of a fan may be increased according to a mode of operation similar to that of FIGS. 5A and 5B or FIG. 7 , so long as such mode of operation aids in diminishing or preventing habituation.
- the programming as disclosed herein is described as being implemented within the programmable device 202 of the diffuser 30 of FIGS. 1-3 , such programming may be implemented in any plug-in type diffuser, including diffusers that emit more than one volatile material.
- the programming described herein may be implemented in diffusers such as those described in Schroeder et al. U.S. Pat. No. 5,647,053, Schroeder et al. U.S. Pat. No. 5,591,395, Pedrotti et al. U.S. Pat. No. 6,931,202, Pedrotti et al. U.S. Pat. No. 6,862,403, Walter et al. U.S. Pat. No.
- volatile materials herein are preferably volatile materials that are susceptible to habituation and/or lose their efficacy after a period of time.
- volatile materials include, but are not limited to, odor eliminators, fragrances, insecticides, insect repellants, insect attractants, disinfectants, air purifiers, aromatherapy scents, antiseptics, deodorizers, air fresheners, and combinations thereof.
- the present invention provides methods of dispensing a volatile material from a diffuser, wherein the volatile material is emitted according to pre-established programming that seeks to reduce, minimize, or prevent habituation to the volatile material by the user.
Abstract
Description
- This application claims the benefit of U.S. Provisional Application No. 61/194,584, filed Sep. 29, 2008, and U.S. Provisional Application No. 61/194,622, filed Sep. 29, 2008. Each of the aforementioned applications is incorporated herein by reference in its entirety.
- Not applicable
- Not applicable
- 1. Field of the Invention
- The present invention relates to methods of dispensing volatile materials, and more particularly, to methods of dispensing volatile material according to pre-established programming that aids in diminishing or preventing habituation.
- 2. Description of the Background
- A multitude of volatile material diffusion devices or diffusers exist in the marketplace. Many of such devices are passive devices that require only ambient air flow to disperse the liquid active material therein. Other devices are battery-powered or receive household power via a plug extending from the device. A cord may be coupled between the plug and the device, or the plug may be mounted directly on the device.
- Various means for dispensing volatile materials from volatile material diffusers are also known in the art. For example, some diffusers include a heating element for heating a volatile material to promote vaporization thereof. Other diffusers employ a fan or blower to generate air flow to direct volatile material out of the diffuser into the surrounding environment. In another type of diffuser, one or more volatile materials may be emitted from the diffuser using a bolus generator that delivers a pulse of air to eject a scent ring. Still other diffusers that dispense volatile materials utilize ultrasonic means to dispense the volatile materials therefrom. In addition, other diffusers utilize more than one of these means to vaporize and/or disperse volatile materials.
- A problem with past volatile material diffusers is that a user may become accustomed to or habituated to a particular volatile material. Habituation is a phenomenon that occurs when a person becomes use to a particular volatile material or fragrance such that they no longer perceive the volatile material. Various diffusers have attempted to alleviate this problem. Some diffusers include a switch or other mechanism that is controlled by the user, whereby the user can change the intensity level at which the volatile material is dispensed. The manner in which the intensity level of the volatile material is varied is either mechanical or electrical in nature.
- Other diffusers include one or more containers having a volatile material therein, wherein a fan and/or a heater is periodically actuated to dispense the volatile material at particular time intervals.
- Still other diffusers include at least two fragrances that are emitted in an alternating sequence. One such diffuser includes a housing having first and second heaters, wherein the housing is adapted to releasably secure first and second containers having first and second wicks respectively extending therefrom. The wicks are disposed adjacent the heaters and the heaters are turned on and off in an alternating sequence to alternately emit the first and second fragrances.
- According to one aspect of the present invention, a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element. The method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the period of time at a first duty cycle having a first on time and a first off time. Still further, the method includes the step of operating the diffusion element for a final period of time, wherein the diffusion element is continuously activated and deactivated during the final period of time at a final duty cycle having a final on time and a final off time. The first duty cycle is less than about 100% such that the first off time is greater than about 0 seconds and the final duty cycle is about 100% such that the final off time is about 0 seconds and wherein the final period of time begins after the first period of time has finished.
- According to a further aspect of the present invention, a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element. The method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the first period of time at a first duty cycle. Still further, the method includes the steps of interrupting operation of the diffusion element during the first period of time to operate the diffusion element at a second duty cycle for an interrupt period of time. The first and second duty cycles are different.
- According to yet another aspect of the present invention, a method of dispensing a volatile material includes the step of providing power to a volatile material diffuser having a diffusion element. The method further includes the step of operating the diffusion element for a first period of time, wherein the diffusion element is continuously activated and deactivated during the first period of time at a first duty cycle. Still further, the method includes the step of operating the diffusion element for a second period of time following the first period of time, wherein the diffusion element is continuously activated and deactivated during the second period of time at a second duty. The method still further includes the step of interrupting operation of the diffusion element during at least one of the first and second periods of time to operate the diffusion element at a third duty cycle for an interrupt period of time.
- Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description and the attached drawings, in which like elements are assigned like reference numerals.
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FIG. 1 is a perspective view of a volatile material diffuser according to the present invention; -
FIG. 2 is an exploded view of the volatile material diffuser ofFIG. 1 ; -
FIG. 3 is a front elevational view of the volatile material diffuser ofFIG. 1 ; -
FIG. 4 is a block diagram of circuits including a programmable device for controlling application of power to a heating device of the diffuser ofFIGS. 1-3 ; -
FIG. 4A is a schematic of one embodiment of the circuits ofFIG. 4 ; -
FIGS. 5A and 5B depict a flow chart illustrating a first embodiment of programming that may be implemented by a programmable device for operation of the heating device of the diffuser ofFIGS. 1-3 ; -
FIG. 6 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted inFIG. 5 ; -
FIG. 7 depicts a flow chart illustrating a second embodiment of programming that may be implemented by a programmable device for operation of the heating device of the diffuser ofFIGS. 1-3 ; -
FIG. 8 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted inFIG. 7 ; and -
FIG. 9 is a plot depicting delivery rate versus time for a sample testing cycle of the programming depicted inFIG. 7 with an interrupt. - Referring to
FIGS. 1 and 2 , avolatile material diffuser 30 generally includes amulti-piece housing 32 having anupper housing portion 34 and alower housing portion 36 fastened together by heat-staking or other suitable fastening means, including, for example, rivets, press fit, snap fit, screws, ultrasonic welding, adhesives, and the like. Acontainer 38 is detachably retained within thelower housing portion 36. Thediffuser 30 further includes anelectrical plug assembly 40 having aplug portion 42 rotatably secured between the upper andlower housing portions electrical contacts 44 extending outwardly from theplug portion 42 for insertion into a conventional wall outlet (not shown) or other electronic device, as discussed in greater detail hereinafter. Acollar 46 is disposed over theplug portion 42 to ensure proper engagement of the upper andlower housing portions plug portion 42. - The
container 38 includes a volatile material disposed therein and awick 48 in contact with the volatile material and extending out of thecontainer 38. Thewick 48 is adapted to draw the volatile material in the form of a liquid out of thecontainer 38 toward anupper portion 49 of thewick 48. Thecontainer 38 is adapted for insertion into and securement within thehousing 32. In particular, front andrear surfaces container 38 include shell-shaped protrusions 52 (only the shell-shaped protrusion on thefront surface 50 a is shown) extending therefrom. Thecontainer 38 is inserted into thelower housing portion 36 by inserting thewick 48 into thehousing 32 and thereafter moving thecontainer 38 upwardly. As thecontainer 38 is moved upwardly, the shell-shapedprotrusion 52 on thefront surface 50 a of thecontainer 38 causes a slight outward deformation of afront wall 54 of theupper housing portion 34 to allow theprotrusion 52 to pass into a similarly-shapedaperture 56 in thefront wall 54 of theupper housing portion 34. As thecontainer 38 is moved upwardly, the shell-shaped protrusion (not shown) on therear surface 50 b of thecontainer 38 moves along agroove 60 formed in afront surface 62 of thelower housing portion 36, as seen inFIGS. 2 and 3 . As the shell-shapedprotrusion 52 on thefront surface 50 a of thecontainer 38 snaps into theaperture 56, a top portion of the shell-shaped protrusion (not shown) on therear surface 50 b of thecontainer 38 comes to rest at a top portion of thegroove 60 that has a shape similar to a top portion of the shell-shaped protrusion. Pulling thecontainer 38 in a downward direction causes a slight outward deformation of thefront wall 54 of theupper housing portion 34 to allow a user to remove and replace thecontainer 38. - Although the
container 38 is shown as being secured within thehousing 32 by shell-shapedprotrusions 52, a neck portion of thecontainer 38 may alternatively be designed to snap or screw into thehousing 32. - The volatile material within the
container 38 may be any type of volatile material, for example, an insecticide, an insect repellant, an insect attractant, a disinfectant, a mold or mildew inhibitor, a fragrance, a disinfectant, an air purifier, an aromatherapy scent, an antiseptic, an odor eliminator, a positive fragrancing volatile material, an air-freshener, a deodorizer, or the like, and combinations thereof. - Referring to
FIG. 2 , theelectrical contacts 44 are electrically connected via conventionalelectrical conductors 70, such as wires or electrodes, to aheating device 72. Thelower housing portion 36 includes ahorizontal platform 74 extending generally perpendicularly from thefront surface 62 of thelower housing portion 36. Aheating device support 76 extends upwardly from theplatform 74 for holding theheating device 72. When thecontainer 38 is inserted into thediffuser 30, thewick 48 thereof extends through achannel 80 in theplatform 74 such that thetop portion 49 of thewick 48 is disposed adjacent theheating device 72. Theheating device 72 applies heat to thewick 48 to enhance the rate at which the volatile material therein is evaporated. As volatile material is evaporated from thewick 48, the volatile material moves upwardly and out anaperture 82 disposed in theupper housing portion 34. - The
diffuser 30 further includes anadjustment mechanism 88 that positions an upper portion of thewick 48 in one of a number of discrete positions relative to theheating device 72 to change the intensity at which the volatile material is evaporated. Theadjustment mechanism 88 includes a hollowcylindrical portion 90 that surrounds and engages the upper portion of thewick 48 to move same toward and away from theheating device 72. Theadjustment mechanism 88 is similar to the adjustment mechanism described in Pedrotti et al. U.S. Pat. No. 6,931,202, the disclosure of which is hereby incorporated by reference in its entirety. Adial portion 92 is provided for rotating thecylindrical portion 90 to change the intensity at which the volatile material is evaporated. Thedial portion 92 extends through anopening 94 in thefront wall 54 of theupper housing portion 34 such that a user can rotate thedial portion 92. Anindicator 96 is preferably disposed on thefront wall 54 of theupper housing portion 34 to provide an indication to a user of how to rotate thedial portion 92 to increase and decrease an intensity at which the volatile material is evaporated. - The
diffuser 30 described with respect toFIGS. 1-3 is described in greater detail in Zobele U.S. Pat. No. 6,996,335, the disclosure of which is incorporated herein in its entirety. - Referring again to
FIGS. 1 and 2 , thediffuser 30 includes anadapter box 100 having a conventionalelectrical socket 102 therein (FIG. 2 ), wherein theelectrical contacts 44 extending from theplug portion 42 of thediffuser 30 are inserted into and retained within theelectrical socket 102. Theadapter box 100 includes a set ofelectrical contacts 104 extending therefrom for insertion into a conventional wall socket (not shown) to power thediffuser 30. Theadapter box 100 includes a printed circuit board (PCB) 106 (FIG. 2 ) disposed therein for controlling the functionality of theheating device 72, as discussed in greater detail hereinafter. Theadapter box 100 may be used with any diffuser known in the art. Optionally, theadapter box 100 may be replaced by aPCB 106 that implements the same or similar functionality and which is disposed within thediffuser 30. -
FIG. 4 depicts a block diagram of circuits for controlling the operation of theheating device 72 of thevolatile material diffuser 30. The circuits ofFIG. 4 are carried by, for example, thePCB 106. Avoltage regulator 200 known to those of ordinary skill in the art provides a regulated voltage Vcc to aprogrammable device 202. In one embodiment, theprogrammable device 202 is an 8-pin flash based 8-bit CMOS microcontroller PIC12F629 sold by Microchip Technology Inc. of Chandler, Ariz. Theprogrammable device 202 includes atimer 204 and/or arandom number generator 206. Anoptional drive circuit 208 is connected between theprogrammable device 202 and theheating device 72. Theoptional drive circuit 208 may be carried by thePCB 106 and is utilized if theprogrammable device 202 cannot develop suitable power to operate theheating device 72. -
FIG. 4A illustrates one embodiment of the circuits ofFIG. 4 , wherein thevoltage regulator 200 is shown in a block A. The block A includes four diodes D1-D4 coupled in a full bridge configuration to develop a full wave rectified voltage from a 120 VAC power supply. A resistor R1 and a zener diode D5 are connected in parallel across the full wave rectified voltage and first and second capacitors C1 and C2 are connected in parallel between a terminal 199 and ground for filtering purposes. The components R1, D5, C1, and C2 together develop a 5V voltage for theprogrammable device 202. A zero-crossing of the A.C. voltage input is sensed by circuitry comprising a resistor R2 and a zener diode D6 to provide a timing reference to theprogrammable device 202. An output of the programmable device provides a control signal via a resistor R3 to a base of a transistor Q1. The collector of the transistor Q1 is connected to afirst terminal 210 of theheating device 72 and an emitter of the transistor Q1 is connected to ground. Asecond terminal 212 of theheating device 72 is connected to the full wave rectified voltage. Theprogrammable device 202 controls how much of each pulse of the full wave rectified voltage that is applied to theheating device 72 by turning the transistor Q1 on and off for a predetermined amount of time during each pulse of the full wave rectified voltage. While this is not a conventional implementation of pulse width modulation (PWM), the conduction time of theheating device 72 is varied as if a PWM signal were applied thereto. - In operation, the
programmable device 202 senses the zero crossing of the A.C. power supply once every 8 milliseconds. Theprogrammable device 202 is programmed to save parameters, such as how much time has elapsed since thetimer 204 was activated, when theprogrammable device 202 determines that thediffuser 30 has been disconnected form the A.C. power supply. Specifically, when thediffuser 30 is disconnected from the A.C. power supply, theprogrammable device 202 saves current parameters because theprogrammable device 202 does not sense the zero-crossing for a period of more than 8 milliseconds while the capacitors C1 and C2 discharge. Theprogrammable device 202 subsequently restores the saved parameters when power is reapplied to thediffuser 30 and theprogrammable device 202 senses the zero crossing. -
FIG. 5A illustrates a first embodiment of programming that may be implemented by theprogrammable device 202 to operate theheating device 72, for example, or any other diffusion element known in the art. In the embodiment ofFIGS. 5A and 5B , thetimer 204 but norandom number generator 206 is utilized. Operation begins at ablock 220 after theadapter box 100 ordiffuser 30 is plugged into an electrical outlet, wherein theblock 220 initializes and starts thetimer 204. Next, control passes to ablock 222 that operates the heating device at a 10% duty cycle, wherein the duty cycle is defined by an on or active time of the diffusion element divided by the total period, which includes the on and an off time. During operation, the heating device or other diffusion element is continuously activated and deactivated according to the set duty cycle. Following theblock 222, control passes to ablock 224 that determines whether a period of 24 hours has elapsed since theblock 220 activated thetimer 204. If not, control returns to block 222. If a period of 24 hours has elapsed, control passes to ablock 226 that operates the heating device at a 20% duty cycle. Theblock 226 passes control to ablock 228 that determines whether a period of 48 hours has passed since theblock 220 started thetimer 204. Control returns to theblock 226 if the period since thetimer 204 started is less than 48 hours. Otherwise, control passes to ablock 230 that operates theheating device 72 at a 30% duty cycle. Following theblock 230, ablock 232 determines whether a period of 144 hours has elapsed since theblock 220 initialized thetimer 204. In the event that a period of less than 144 hours has elapsed since thetimer 204 was initiated, control returns to theblock 230. Otherwise, if a period of 144 hours or more has elapsed, control passes to ablock 234 that operates the heating device at a 40% duty cycle. Theblock 234 passes control to ablock 236 that determines whether a period of 192 hours has elapsed since thetimer 204 started. If not, control returns to theblock 234. If a period of 192 hours has elapsed, control passes to ablock 238 that operates theheating device 72 at a 50% duty cycle. Theblock 238 thereafter passes control to ablock 240 that determines whether a period of 240 hours has elapsed since thetimer 204 was initiated at theblock 220. If a period of less than 240 hours has elapsed since thetimer 204 was started, control returns to theblock 238. Otherwise, if a period of 240 hours or more has elapsed, control passes to ablock 242 that operates theheating device 72 at a 60% duty cycle. Following theblock 242, ablock 244 determines whether it has been at least 288 hours since theblock 220 activated thetimer 204. If not, control returns to theblock 242. If a period of at least 288 hours has elapsed since thetimer 204 started, control passes to ablock 246 that operates theheating device 72 at a 70% duty cycle. - Referring to
FIG. 5B , control passes from theblock 246 to ablock 248 that determines whether a period of 336 hours has elapsed since theblock 220 activated thetimer 204. If not, control returns to theblock 246. Otherwise, if a period of at least 336 hours has elapsed, control passes to ablock 250 that activates theheating device 72 at a 80% duty cycle. Following theblock 250, control passes to ablock 252 that determines whether 384 hours has passed since theblock 220 started thetimer 204. If less than 384 hours has elapsed since thetimer 204 started, control returns to theblock 250. If a period of at least 384 hours has elapsed, control passes to ablock 254 that operates the heating device at a 90% duty cycle and thereafter passes control to ablock 256 that determines whether a period of 432 hours has elapsed. If not, control returns to block 254. Control passes to ablock 258 if theblock 256 determines that a period of 432 hours has passed since thetimer 204 started and theblock 258 operates theheating device 72 at a 100% duty cycle. Thereafter, control passes to ablock 260 that determines whether a period of 1080 hours has elapsed since thetimer 204 was initiated. Control returns to theblock 258 unless theblock 260 determines that thetimer 204 has operated for 1080 hours. - With reference to
FIG. 6 , a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming ofFIG. 5 to control theheating device 72. A solid line C represents a delivery rate of theheating device 72 when theheating device 72 is operated at a duty cycle of 100% over a testing period of 96 hours. The delivery rate shown by the solid line C steadily decreases over time and would continue to do so if operated past 96 hours. In contrast, broken line D illustrates the delivery rate of theheating device 72 when the duty cycle of theheating device 72 is varied over time according to the programming ofFIG. 5 . Unlike the delivery rate shown by the solid line C, the delivery rate shown by the broken line D indicates a spike in the delivery rate when the duty cycle of the heating device is increased from 10% to 20% after 48 hours of operation according to the programming ofFIG. 5 . It is believed that similar spikes would occur after each increase in duty cycle, thereby providing bursts of volatile material that work to reduce, minimize, or prevent habituation to the volatile material. -
FIG. 7 illustrates a second embodiment of programming that may be implemented by the programmable device 302 to operate theheating device 72, for example, or any other diffusion element known in the art. In the embodiment ofFIG. 7 , thetimer 204 but norandom number generator 206 is utilized. Operation begins at ablock 320 after theadapter box 100 ordiffuser 30 is plugged into an electrical outlet, wherein theblock 320 initializes and starts thetimer 204. Next, control passes to ablock 322 that operates theheating device 72 at a 20% duty cycle. Following theblock 322, control passes to ablock 324 that determines whether a period of 5 hours has elapsed since theblock 320 activated thetimer 204. If not, control returns to theblock 322. If a period of 5 hours has elapsed, control passes to ablock 326 that operates theheating device 72 at a 33% duty cycle and passes control to ablock 328. Theblock 328 determines whether a period of 10 hours has elapsed since theblock 320 activated thetimer 204. If not, control returns to theblock 326. When theblock 328 determines that a period of 10 hours has elapsed, control passes to ablock 330. Theblock 330 operates theheating device 72 at a duty cycle of 50% and passes control to ablock 332 that checks whether a period of 24 hours has elapsed since theblock 320 started thetimer 204. If a period of less than 24 hours has elapsed, control returns to theblock 330. If a period of 24 hours has elapsed since thetimer 204 was initiated, control passes to ablock 334 that activates theheating device 72 at a 66% duty cycle. Following theblock 334, control passes to ablock 336 that determines whether a period of 120 hours has elapsed since theblock 320 initiated thetimer 204. If not, control returns to theblock 334. If a period of 120 hours has elapsed, control passes to ablock 338 that operates the heating device at 80% duty cycle. Theblock 338 thereafter passes control to ablock 340 that determines whether a period of 240 hours has elapsed since thetimer 204 was initiated. Theblock 340 returns control to theblock 338 if theblock 340 determines that a period of less than 240 hours has elapsed. Otherwise, theblock 340 passes control to ablock 342 that operates theheating device 72 at 90% duty cycle and thereafter passes control to ablock 344. Theblock 344 determines whether a period of 360 hours has elapsed since thetimer 204 was initiated in theblock 320. If not, control returns to theblock 342. If a period of 360 hours has elapsed, control passes to ablock 346 that operates theheating device 72 at a 100% duty cycle. Theblock 346 passes control to ablock 348 that determines whether a period of 1080 hours has elapsed since thetimer 204 was started in theblock 320. Control returns to theblock 346 if a period of less than 1080 hours has elapsed. Otherwise, operation ends at theblock 348. - With reference to
FIG. 8 , a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming ofFIG. 7 to control theheating device 72. A solid line E represents a delivery rate of theheating device 72 when theheating device 72 is operated at a duty cycle of 100%. The solid line E ends at 189 hours due to a limited testing period. As shown, the delivery rate shown by the solid line E steadily decreases over time and would continue to do so if the testing period were continued. In contrast, broken line F illustrates the delivery rate of theheating device 72 when the duty cycle of theheating device 72 is varied over time according to the programming ofFIG. 7 . Unlike the delivery rate shown by the solid line E, the delivery rate shown by the broken line F indicates a steady continuous delivery rate that does not decrease over time. - In a further embodiment of programming, the programming of
FIG. 7 may be implemented by theprogrammable device 202 to operate theheating device 72, for example, or any other diffusion element known in the art, with an interrupt. In particular, at any point during the operation of the programming ofFIG. 7 , an interrupt may be generated to suspend control from any of the blocks shown inFIG. 7 and cause therandom number generator 206 to generate a random number N1. The random number N1 may be any integer and may be selected from any set range of integers that would reduce, minimize, or prevent habituation. Once the random number N1 is generated, theprogrammable device 202 operates the programming ofFIG. 7 until the interrupt gap period of time, which is equal to N1×TIME FACTOR, has elapsed. Once the interrupt gap has elapsed, theprogrammable device 202 operates theheating device 72 at an interrupt duty cycle for an interrupt period of time. After the interrupt period has elapsed, control may be returned to the last block that was in operation before the interrupt was generated. Thereafter, the interrupt may be generated again (for the same interrupt period or a different interrupt period) after the interrupt gap period of (N1×TIME FACTOR), wherein NI may be a different integer every time therandom number generator 206 is run. - In one embodiment of the programming of
FIG. 7 , the random number Ni may be the same for a single loop through the programming. In such scenario, the random number N1 may be set at theblock 320 and would remain the same for the entire programming and for multiple interrupts. In such example, if, for example, the random number N1=8 were randomly selected, the time factor is 1 hour, and the interrupt period is 1 hour, the programming would implement an interrupt period of 1 hour after an interrupt gap of 8 hours, return to the programming after the 1 hour interrupt period for an interrupt gap of 8 hours, implement another 1 hour interrupt period, and continue this cycle throughout the programming. - In a further embodiment of the programming of
FIG. 7 , the random number N1 may be different for a single loop through the programming. In such scenario, the random number N1 may be set at theblock 320 and would also be set after each interrupt completes. In a specific example, at theblock 320, if the random number N1=3 were randomly selected, the time factor is 1 hour, and the interrupt period is 1 hour, the programming would implement an interrupt period of 1 hour after an interrupt gap of 3 hours. After the 1 hour interrupt period, the random number N1 would again be randomly selected, for example, to be N1=9. The programming would then implement an interrupt period of 1 hour (or possibly a different interrupt period) after an interrupt gap of 9 hours. This cycle would continue throughout the programming. - Although an interrupt period of 1 hour is utilized herein, any interrupt period may be utilized that would reduce, minimize, or prevent habituation. In particular, the interrupt period is preferably between 5 minutes and 4 hours, more preferably between about 30 minutes and 2 hours, and most preferably 1 hour. Optionally, although multiple random numbers N1 are selected to create multiple interrupts, a single random number N1 may be selected to create a single interrupt.
- Still further, the time factor is preferably between about 10 seconds and about 8 hours, more preferably between about 1 minute and 60 minutes, and most preferably between about 5 minutes and about 30 minutes. The interrupt duty cycle is also preferably, although not necessarily 100%. Optionally, the interrupt duty cycle may be any duty cycle that would create a spike or increase in volatile material emission.
- Referring to
FIG. 9 , a sample plot of the delivery rate (grams/hour) versus time (hours) illustrates an advantage that is derived from using the programming ofFIG. 7 with the interrupt, as described above, to control theheating device 72. In particular, in the sample plot ofFIG. 9 , the random number N1 was randomly selected from the range of integers between and including 6 and 12 with a time factor of 1 hour and an interrupt period of 1 hour. A solid line G represents a delivery rate of theheating device 72 when theheating device 72 is operated at a duty cycle of 100% during the testing period of 193 hours. As shown, the delivery rate shown by the solid line G steadily decreases over time. In contrast, broken line H illustrates the delivery rate of theheating device 72 when the duty cycle of theheating device 72 is varied over time according to the programming ofFIG. 7 with the interrupt. Unlike the delivery rate shown by the solid line G, the delivery rate shown by the broken line H indicates a spike in the delivery rate each time theheating device 72 is operated at a 100% duty cycle for a period of an hour according to the interrupt described above with respect to the programming ofFIG. 7 . This spike in delivery serves to reduce, minimize, or prevent habituation that occurs when a volatile material is dispensed continuously at a single rate of emission. - Although the test sample for the interrupt was conducted using the programming of
FIG. 7 , the interrupt may be implemented within any programming, for example, that ofFIGS. 5A and 5B , programming wherein an active material is emitted at a single constant level, etc. - The duty cycles, time factors, interrupt gaps, and interrupt periods of time associated with each duty cycle, as described in detail with respect to the programming of
FIGS. 5A and 5B andFIG. 7 and the interrupt, may be varied, as long as such variations produce results similar to those seen inFIG. 6 andFIGS. 8 and 9 (without or with an interrupt), respectively. In particular, any such variations would still work to reduce, minimize, or prevent habituation in the same manners as seen inFIG. 6 andFIGS. 8 and 9 . - As noted above, the diffusion elements of the modes of operation herein are continuously activated and deactivated according to set duty cycles. The total periods for such duty cycles are preferably greater than 0 seconds and less than about 100 seconds, more preferably between about 1/10 second and about 20 seconds, and most preferably between about 1 second and about 10 seconds.
- Although specific time periods for activating diffusion elements at particular duty cycles are described herein, such time periods may be altered and/or the number of time periods decreased, so long as the mode of operation seeks to diminish or prevent habituation. Still further, although specific duty cycles are disclosed in the modes of operation herein, such duty cycles may be altered, so long as the mode of operation seeks to diminish or prevent habituation. In particular, additional modes of operation contemplated herein include stepwise increasing of the duty cycle over the same or increasing periods of time.
- Diffusion element(s) as referred to herein may be any type of element that promotes diffusion of a volatile material. Examples of diffusion elements include, but are not limited to, aerosol actuators, piezoelectric elements, heaters, fans, nebulizers, and the like. To that effect, any of the modes of operation disclosed herein may be utilized with any type of diffusion element and/or combinations of diffusion elements (e.g. a device that utilizes multiple heaters and a single fan, a device that utilizes a heater to diffuse a first volatile material and a fan to diffuse a second material, etc.).
- To that end, although the modes of operation as disclosed herein refer to duty cycles, such modes of operation may be implemented to vary any characteristic of a diffusion element. A characteristic may be any feature of any diffusion element that may be altered to aid in diminishing or preventing habituation. Various characteristics include, but are not limited to speed, intensity, temperature, frequency of actuation, length of actuation, duty cycle, and the like. In one non-limiting embodiment of varying a characteristic, the speed of a fan may be increased according to a mode of operation similar to that of
FIGS. 5A and 5B orFIG. 7 , so long as such mode of operation aids in diminishing or preventing habituation. - Although the programming as disclosed herein is described as being implemented within the
programmable device 202 of thediffuser 30 ofFIGS. 1-3 , such programming may be implemented in any plug-in type diffuser, including diffusers that emit more than one volatile material. For example, the programming described herein may be implemented in diffusers such as those described in Schroeder et al. U.S. Pat. No. 5,647,053, Schroeder et al. U.S. Pat. No. 5,591,395, Pedrotti et al. U.S. Pat. No. 6,931,202, Pedrotti et al. U.S. Pat. No. 6,862,403, Walter et al. U.S. Pat. No. 6,857,580, Pedrotti et al. U.S. Pat. No. 6,917,754, Martens III, et al. U.S. Pat. No. 4,849,606, Leonard et al. U.S. Pat. No. 5,937,140, Jaworski et al. U.S. Pat. No. 6,478,440, Porchia et al. U.S. application Ser. No. 11/427,714, and Neumann et al. U.S. application Ser. No. 12/319,606, the disclosures of which are incorporated herein in their entirety. Further, such programming may be incorporated into any plug-in type diffusers known in the art that employ a heater. - The volatile materials herein are preferably volatile materials that are susceptible to habituation and/or lose their efficacy after a period of time. Such volatile materials include, but are not limited to, odor eliminators, fragrances, insecticides, insect repellants, insect attractants, disinfectants, air purifiers, aromatherapy scents, antiseptics, deodorizers, air fresheners, and combinations thereof.
- The present invention provides methods of dispensing a volatile material from a diffuser, wherein the volatile material is emitted according to pre-established programming that seeks to reduce, minimize, or prevent habituation to the volatile material by the user.
- Numerous modifications will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the present invention and to teach the best mode of carrying out same. All patents and other references cited herein are incorporated by reference in their entirety. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.
Claims (20)
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TW (1) | TW201014619A (en) |
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Cited By (1)
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---|---|---|---|---|
US20150019030A1 (en) * | 2013-07-10 | 2015-01-15 | Scentair Technologies, Inc. | Bias setting in a scent delivery system |
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Citations (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3410488A (en) * | 1964-12-22 | 1968-11-12 | Sugimura Sadakichi | Automatic perfume atomizer |
US3948445A (en) * | 1973-06-26 | 1976-04-06 | Andeweg Frits J | Material vapor generator with heat accelerated vapor release |
US4425302A (en) * | 1981-12-17 | 1984-01-10 | Seimex, S.A. | Household electric device, a sublimer of perfumed bars and/or insecticides |
US4603030A (en) * | 1984-09-20 | 1986-07-29 | Mccarthy Robert E | Scent-Emitting Systems |
US4849606A (en) * | 1987-12-23 | 1989-07-18 | S. C. Johnson & Son, Inc. | Tamper-resistant container utilizing a flexible seal |
US4924068A (en) * | 1987-11-19 | 1990-05-08 | A.R.M.I.N.E.S. | Steam generator |
US5029729A (en) * | 1983-12-09 | 1991-07-09 | Milliken Denmark A/S | Method of dispensing vapor to the air in a room and an apparatus for carrying out the method |
US5111477A (en) * | 1990-05-07 | 1992-05-05 | Technical Concepts, L.P. | Fragrance diffuser |
US5175791A (en) * | 1990-05-07 | 1992-12-29 | Technical Concepts, L.P. | Fragrance diffuser having stepped power levels |
US5297988A (en) * | 1990-11-02 | 1994-03-29 | Nippondenso Co., Ltd. | Fragrance supplying apparatus for vehicle |
US5429180A (en) * | 1992-10-02 | 1995-07-04 | Nippondenso Co., Ltd. | Perfume generating device |
US5591409A (en) * | 1995-08-15 | 1997-01-07 | Watkins; Carl J. | Providing aromas |
US5591395A (en) * | 1995-08-03 | 1997-01-07 | S. C. Johnson & Son, Inc. | Method of disinfecting air |
US5647053A (en) * | 1995-10-11 | 1997-07-08 | S. C. Johnson & Son, Inc. | Vapor dipensing device |
US5937140A (en) * | 1996-09-23 | 1999-08-10 | S. C. Johnson & Son, Inc. | Thermal-fuse plug-through, plug-in diffuser |
US6204623B1 (en) * | 1998-12-17 | 2001-03-20 | The Holmes Group, Inc. | Heater, humidifier or fan including a circuit for controlling the output thereof |
US6390453B1 (en) * | 1997-10-22 | 2002-05-21 | Microfab Technologies, Inc. | Method and apparatus for delivery of fragrances and vapors to the nose |
US6478440B1 (en) * | 2000-03-10 | 2002-11-12 | S.C. Johnson & Son, Inc. | Night light air freshener |
US6581915B2 (en) * | 2000-07-27 | 2003-06-24 | The Procter & Gamble Company | Dispensing device for dispensing scents |
US6603924B2 (en) * | 2001-04-09 | 2003-08-05 | Zelnova, S.A. | Thermal vaporizer, container for the thermal vaporizer and a thermal vaporizer assembly |
US6661967B2 (en) * | 2000-02-25 | 2003-12-09 | The Dial Corporation | Variable temperature vaporizer |
US6712287B1 (en) * | 1999-06-22 | 2004-03-30 | Osmooze S.A. | Programmable device for diffusing olfactory peaks |
US20040101447A1 (en) * | 2000-05-26 | 2004-05-27 | Yukinobu Tajima | Method and apparatus for generating smell |
US6792199B2 (en) * | 2000-02-25 | 2004-09-14 | The Dial Corporation | Variable temperature vaporizer |
US6790408B2 (en) * | 1999-07-17 | 2004-09-14 | Reckitt Benckiser (Uk) Limited | Fragrance emitting device |
US6854717B2 (en) * | 2002-04-12 | 2005-02-15 | Dbk Espana, S.A. | Evaporator device for active substances |
US6857580B2 (en) * | 2001-12-03 | 2005-02-22 | S.C. Johnson & Son, Inc. | Plug-in type liquid atomizer |
US6862403B2 (en) * | 2001-08-07 | 2005-03-01 | S.C. Johnson & Son, Inc. | Rotatable plug assembly including an extra outlet |
US6917754B2 (en) * | 2001-08-07 | 2005-07-12 | S.C. Johnson & Son, Inc. | Multi-functional electrical vaporizer for a liquid substance and method of manufacturing such a vaporizer |
US6920282B2 (en) * | 2002-08-16 | 2005-07-19 | The Dial Corporation | Methods and apparatus for a controllable vapor-dispensing device |
US6923383B1 (en) * | 2000-08-24 | 2005-08-02 | Microlin, L.C. | Controlled release of substances |
US6931202B2 (en) * | 2000-07-28 | 2005-08-16 | S.C. Johnson & Son, Inc. | Electrical evaporator with adjustable evaporation intensity |
US6996335B2 (en) * | 2004-02-12 | 2006-02-07 | S.C. Johnson & Son, Inc. | Electrical evaporator with ratcheting wick adjuster |
US7036800B2 (en) * | 2002-04-08 | 2006-05-02 | Ellis Earle R | Automatically controlling the interaction of a medium with an external environment |
US20060193611A1 (en) * | 2005-02-03 | 2006-08-31 | Zobele Espana, S.A. | Vaporizer device of multi-fragrance volatile substances |
US20070012718A1 (en) * | 2005-04-12 | 2007-01-18 | Schramm Heather R | Apparatus for and Method of Dispensing Active Materials |
US7223361B2 (en) * | 2000-07-27 | 2007-05-29 | The Proctor & Gamble Company | Methods for emitting volatile compositions |
US20070160492A1 (en) * | 2006-01-11 | 2007-07-12 | Donald Spector | Electronic room freshener and method for releasing fragrances |
US20070166185A1 (en) * | 2003-07-28 | 2007-07-19 | International Flavors & Fragrances, Inc. | Method for dispensing liquid fragrances and device for carrying out the method |
US20070166186A1 (en) * | 2004-02-11 | 2007-07-19 | Stec Michael J | Descenting apparatus and method |
US7249719B2 (en) * | 2002-08-30 | 2007-07-31 | The Dial Corporation | Method and apparatus for a multiple source vapor-dispensing device |
US20070280653A1 (en) * | 2004-03-26 | 2007-12-06 | Viera Pedro Q | Device For The Evaporation Of Volatile Substances, In Particular Of Aromatics And/Or Insecticides |
US20080014125A1 (en) * | 2003-08-28 | 2008-01-17 | The Dial Corporation | Method and apparatus for a multiple source vapor-dispensing device |
US20080095522A1 (en) * | 2006-10-20 | 2008-04-24 | Stefano Deflorian | Electric evaporator device of volatile substances with adjustable evaporation intensity |
US20080191370A1 (en) * | 2001-10-04 | 2008-08-14 | Pankhurst Richard P H | Dispersing fragrances |
US7484716B2 (en) * | 2004-04-14 | 2009-02-03 | University Of Southern California | Scent delivery device and method of simulating scent in a virtual environment |
US7493028B2 (en) * | 2006-04-04 | 2009-02-17 | Group Dekko, Inc. | Multiple bottle evaporative diffuser |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0719169B2 (en) | 1992-04-17 | 1995-03-06 | 株式会社豊田中央研究所 | Fluctuation drive for fragrance |
GB2369816B (en) | 2000-12-06 | 2004-12-22 | Dudley Ind Ltd | Dispensing device |
EP1407790A1 (en) | 2002-10-10 | 2004-04-14 | Spy Marketing Sdn. Bhd. | Improved olfactory stimulating material dispensing apparatus |
WO2007064189A1 (en) | 2005-12-01 | 2007-06-07 | Sara Lee/De N.V. | Fragrance delivery system |
WO2007079046A1 (en) | 2005-12-30 | 2007-07-12 | The Dial Corporation | Method to overcome air freshener odor habituation |
GB0622743D0 (en) | 2006-11-15 | 2006-12-27 | Reckitt Benckiser Uk Ltd | Device |
GB0710573D0 (en) | 2007-06-02 | 2007-07-11 | Reckitt Benckiser Uk Ltd | Spraying device |
-
2009
- 2009-09-23 US US12/565,530 patent/US8293172B2/en active Active
- 2009-09-28 TW TW098132680A patent/TW201014619A/en unknown
- 2009-09-29 CN CN2009801462999A patent/CN102215878A/en active Pending
- 2009-09-29 WO PCT/US2009/005365 patent/WO2010036378A1/en active Application Filing
- 2009-09-29 EP EP09736703.1A patent/EP2341947B1/en active Active
- 2009-09-29 AR ARP090103747A patent/AR076632A1/en unknown
- 2009-09-29 ES ES09736703T patent/ES2733597T3/en active Active
- 2009-09-29 MX MX2011003385A patent/MX2011003385A/en active IP Right Grant
Patent Citations (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3410488A (en) * | 1964-12-22 | 1968-11-12 | Sugimura Sadakichi | Automatic perfume atomizer |
US3948445A (en) * | 1973-06-26 | 1976-04-06 | Andeweg Frits J | Material vapor generator with heat accelerated vapor release |
US4425302A (en) * | 1981-12-17 | 1984-01-10 | Seimex, S.A. | Household electric device, a sublimer of perfumed bars and/or insecticides |
US5029729A (en) * | 1983-12-09 | 1991-07-09 | Milliken Denmark A/S | Method of dispensing vapor to the air in a room and an apparatus for carrying out the method |
US4603030A (en) * | 1984-09-20 | 1986-07-29 | Mccarthy Robert E | Scent-Emitting Systems |
US4924068A (en) * | 1987-11-19 | 1990-05-08 | A.R.M.I.N.E.S. | Steam generator |
US4849606A (en) * | 1987-12-23 | 1989-07-18 | S. C. Johnson & Son, Inc. | Tamper-resistant container utilizing a flexible seal |
US5111477A (en) * | 1990-05-07 | 1992-05-05 | Technical Concepts, L.P. | Fragrance diffuser |
US5175791A (en) * | 1990-05-07 | 1992-12-29 | Technical Concepts, L.P. | Fragrance diffuser having stepped power levels |
US5297988A (en) * | 1990-11-02 | 1994-03-29 | Nippondenso Co., Ltd. | Fragrance supplying apparatus for vehicle |
US5429180A (en) * | 1992-10-02 | 1995-07-04 | Nippondenso Co., Ltd. | Perfume generating device |
US5591395A (en) * | 1995-08-03 | 1997-01-07 | S. C. Johnson & Son, Inc. | Method of disinfecting air |
US5591409A (en) * | 1995-08-15 | 1997-01-07 | Watkins; Carl J. | Providing aromas |
US5647053A (en) * | 1995-10-11 | 1997-07-08 | S. C. Johnson & Son, Inc. | Vapor dipensing device |
US5937140A (en) * | 1996-09-23 | 1999-08-10 | S. C. Johnson & Son, Inc. | Thermal-fuse plug-through, plug-in diffuser |
US6390453B1 (en) * | 1997-10-22 | 2002-05-21 | Microfab Technologies, Inc. | Method and apparatus for delivery of fragrances and vapors to the nose |
US6204623B1 (en) * | 1998-12-17 | 2001-03-20 | The Holmes Group, Inc. | Heater, humidifier or fan including a circuit for controlling the output thereof |
US6712287B1 (en) * | 1999-06-22 | 2004-03-30 | Osmooze S.A. | Programmable device for diffusing olfactory peaks |
US6790408B2 (en) * | 1999-07-17 | 2004-09-14 | Reckitt Benckiser (Uk) Limited | Fragrance emitting device |
US6792199B2 (en) * | 2000-02-25 | 2004-09-14 | The Dial Corporation | Variable temperature vaporizer |
US6661967B2 (en) * | 2000-02-25 | 2003-12-09 | The Dial Corporation | Variable temperature vaporizer |
US6478440B1 (en) * | 2000-03-10 | 2002-11-12 | S.C. Johnson & Son, Inc. | Night light air freshener |
US20040101447A1 (en) * | 2000-05-26 | 2004-05-27 | Yukinobu Tajima | Method and apparatus for generating smell |
US6581915B2 (en) * | 2000-07-27 | 2003-06-24 | The Procter & Gamble Company | Dispensing device for dispensing scents |
US7223361B2 (en) * | 2000-07-27 | 2007-05-29 | The Proctor & Gamble Company | Methods for emitting volatile compositions |
US6931202B2 (en) * | 2000-07-28 | 2005-08-16 | S.C. Johnson & Son, Inc. | Electrical evaporator with adjustable evaporation intensity |
US6923383B1 (en) * | 2000-08-24 | 2005-08-02 | Microlin, L.C. | Controlled release of substances |
US6603924B2 (en) * | 2001-04-09 | 2003-08-05 | Zelnova, S.A. | Thermal vaporizer, container for the thermal vaporizer and a thermal vaporizer assembly |
US6862403B2 (en) * | 2001-08-07 | 2005-03-01 | S.C. Johnson & Son, Inc. | Rotatable plug assembly including an extra outlet |
US6917754B2 (en) * | 2001-08-07 | 2005-07-12 | S.C. Johnson & Son, Inc. | Multi-functional electrical vaporizer for a liquid substance and method of manufacturing such a vaporizer |
US20080191370A1 (en) * | 2001-10-04 | 2008-08-14 | Pankhurst Richard P H | Dispersing fragrances |
US6857580B2 (en) * | 2001-12-03 | 2005-02-22 | S.C. Johnson & Son, Inc. | Plug-in type liquid atomizer |
US7036800B2 (en) * | 2002-04-08 | 2006-05-02 | Ellis Earle R | Automatically controlling the interaction of a medium with an external environment |
US6854717B2 (en) * | 2002-04-12 | 2005-02-15 | Dbk Espana, S.A. | Evaporator device for active substances |
US6920282B2 (en) * | 2002-08-16 | 2005-07-19 | The Dial Corporation | Methods and apparatus for a controllable vapor-dispensing device |
US7249719B2 (en) * | 2002-08-30 | 2007-07-31 | The Dial Corporation | Method and apparatus for a multiple source vapor-dispensing device |
US20070166185A1 (en) * | 2003-07-28 | 2007-07-19 | International Flavors & Fragrances, Inc. | Method for dispensing liquid fragrances and device for carrying out the method |
US20080014125A1 (en) * | 2003-08-28 | 2008-01-17 | The Dial Corporation | Method and apparatus for a multiple source vapor-dispensing device |
US20070166186A1 (en) * | 2004-02-11 | 2007-07-19 | Stec Michael J | Descenting apparatus and method |
US6996335B2 (en) * | 2004-02-12 | 2006-02-07 | S.C. Johnson & Son, Inc. | Electrical evaporator with ratcheting wick adjuster |
US20070280653A1 (en) * | 2004-03-26 | 2007-12-06 | Viera Pedro Q | Device For The Evaporation Of Volatile Substances, In Particular Of Aromatics And/Or Insecticides |
US7484716B2 (en) * | 2004-04-14 | 2009-02-03 | University Of Southern California | Scent delivery device and method of simulating scent in a virtual environment |
US20060193611A1 (en) * | 2005-02-03 | 2006-08-31 | Zobele Espana, S.A. | Vaporizer device of multi-fragrance volatile substances |
US20070012718A1 (en) * | 2005-04-12 | 2007-01-18 | Schramm Heather R | Apparatus for and Method of Dispensing Active Materials |
US20070160492A1 (en) * | 2006-01-11 | 2007-07-12 | Donald Spector | Electronic room freshener and method for releasing fragrances |
US7493028B2 (en) * | 2006-04-04 | 2009-02-17 | Group Dekko, Inc. | Multiple bottle evaporative diffuser |
US20080095522A1 (en) * | 2006-10-20 | 2008-04-24 | Stefano Deflorian | Electric evaporator device of volatile substances with adjustable evaporation intensity |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150019030A1 (en) * | 2013-07-10 | 2015-01-15 | Scentair Technologies, Inc. | Bias setting in a scent delivery system |
US9715223B2 (en) * | 2013-07-10 | 2017-07-25 | Scentair Technologies, Llc | Bias setting in a scent delivery system |
US10859994B2 (en) * | 2013-07-10 | 2020-12-08 | Scentair Technologies, Llc | Bias setting in a scent delivery system |
US11573550B2 (en) | 2013-07-10 | 2023-02-07 | Scentair Technologies, Llc | Bias setting in a scent delivery system |
Also Published As
Publication number | Publication date |
---|---|
WO2010036378A1 (en) | 2010-04-01 |
ES2733597T3 (en) | 2019-12-02 |
CN102215878A (en) | 2011-10-12 |
EP2341947B1 (en) | 2019-04-10 |
EP2341947A1 (en) | 2011-07-13 |
AR076632A1 (en) | 2011-06-29 |
US8293172B2 (en) | 2012-10-23 |
TW201014619A (en) | 2010-04-16 |
MX2011003385A (en) | 2011-06-09 |
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